Category: Physics

What is beta decay process? Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. In beta minus decay, a neutron decays into a proton, an electron, and an antineutrino: n Æ p + e – +. What is […]

How long does it take for the ball to hit the ground? three seconds Does it take a ball longer to go up or down? While coming down, the force of air drag is upward and the force of gravity is downward, so the ball’s downward acceleration has average magnitude less than g, say adown […]

What are two uses for sonar? Sonar uses sound waves to ‘see’ in the water. NOAA scientists primarily use sonar to develop nautical charts, locate underwater hazards to navigation, search for and map objects on the seafloor such as shipwrecks, and map the seafloor itself. There are two types of sonar—active and passive. What is […]

How do you calculate watts? AC three phase amps to watts calculation formula P(W) = √3 × PF × I(A) × VL-L(V) So watts are equal to square root of 3 times power factor PF times amps times volts: watt = √3 × PF × amp × volt. or. W = √3 × PF × […]

What are the two most common carbonate minerals? The two most common carbonate minerals are calcite, CaCO3 (Calcium carbonate), and dolomite, CaMg (CO3)2 (calcium/magnesium carbonate). Which of the following is the best identification of minerals? The most common physical properties are crystal form, color, hardness, cleavage, and specific gravity. One of the best ways to […]

What happens if an atom is not electrically neutral? Atoms which are not electrically neutral are called ions. One can collect electric charge by transferring electrons. Materials with an excess of electrons are negatively charged. Those with a deficiency of electrons are positively charged. What if there is no electron? You would become plasma as […]

What type of fuel can be substituted for an aircraft if the recommended octane is not available? What type fuel can be substituted for an aircraft if the recommended octane is not available? A) The next lower octane aviation gas. B) Unleaded automotive gas of the same octane rating….2.3.2.4.5.A.1. 2.3.2.4.5.A.1 PAR PRG PRH RPA RPG […]

What is the difference between a primary consumer and a secondary consumer and tertiary? The main difference between primary secondary and tertiary consumers is that primary consumers are the herbivores that feed on plants, and secondary consumers can be either carnivores, which prey on other animals, or omnivores, which feed on both animals and plants, […]

What is the most germicidal wavelength of UV light? 260 to 265 nm What happens if thymine dimers are not repaired? The more you expose your skin to UV light, the more likely you are to get the very unlucky combination of thymine dimers in a cell that are not repaired and lead to cancer […]

Is it a good idea to stretch sore muscles? “Stretching helps break the cycle,” which goes from soreness to muscle spasm to contraction and tightness. Take it easy for a few days while your body adapts, says Torgan. Or try some light exercise such as walking or swimming, she suggests. Keeping the muscle in motion […]